@inproceedings{measuringcrowdcollectiveness,
  title = {Measuring Crowd Collectiveness},
  author = {Bolei Zhou and Xiaoou Tang and Xiaogang Wang},
  year = {2013},
  booktitle = {CVPR 2013 6},
  url = {http://openaccess.thecvf.com/content_cvpr_2013/html/Zhou_Measuring_Crowd_Collectiveness_2013_CVPR_paper.html},
}